Buscar
Mostrando ítems 51-60 de 126
AC Conductivity and Impedance Properties of 0.65Pb(Mg1/3Nb2/3)O-3-0.35PbTiO(3) Ceramics
(Hindawi Publishing Corporation, 2009-01-01)
The electrical properties of 0.65Pb(Mg1/3Nb2/3)O-3-0.35(PbTiO3) ceramics over a wide range of frequencies (10(2)-10(6) Hz) and temperatures (30-225 degrees C) were studied using impedance spectroscopy technique. The impedance ...
Electrical and microstructural properties of Yb-doped CeO2
(2014-01-01)
Nanopowdered Ce1-xYbxO2-δ solid solutions (0≤x≤0.2) were synthesized by a self-propagating room temperature synthesis. XRD and SEM were used to study the properties of these materials as well as the Yb solubility in CeO2 ...
Creep properties of polycrystalline Al2O3 – Based ceramic composites
(International Committee on Composite Materials, 2017)
Three-phase Al2O3 - ZrO2 - Er2O3 composites with the ternary eutectic composition were fabricated by a conventional solid-state reaction route starting from commercial powders of alumina, erbia and monoclinic zirconia. ...
Nickel-Zinc Ferrite from Reverse Micelle Process: Structural and Magnetic Properties, Mossbauer Spectroscopy Characterization
(Amer Chemical SocWashingtonEUA, 2009)
Estudo dos sistemas cerâmicos multifuncionais CaCu3-xSrxTi4O12 (x=0,00; 0,15; 0,30 e 3,00) na forma de pós, bulks e filmes finos
(Universidade Estadual Paulista (Unesp), 2019-03-29)
Os sistemas cerâmicos à base de CaCu3Ti4O12 (CCTO) possuem alta potencialidade pelas várias aplicações tecnológicas como: capacitores, memórias resistivas, fotoluminescência, varistores e mais recentemente em sensores de ...
EPR of Mn as densifying agent in SnO2 powders
(1999-08-01)
Electron Paramagnetic Resonance (EPR) spectra have been obtained at room temperature and at X-band in powders of SnO2 doped with Mn from 0.3 to 10% and submitted to heat treatment from 500 to 900 °C. Mn ions are probably ...
EPR of Mn as densifying agent in SnO2 powders
(1999-08-01)
Electron Paramagnetic Resonance (EPR) spectra have been obtained at room temperature and at X-band in powders of SnO2 doped with Mn from 0.3 to 10% and submitted to heat treatment from 500 to 900 °C. Mn ions are probably ...
Non-volatile resistive switching in the dielectric superconductor YBa 2Cu3O7-δ
(IOP Publishing, 2009-01)
We report on the reversible, non-volatile and polarity-dependent resistive switching between superconductor and insulator states at the interfaces of an Au/YBa2Cu3O7-δ (YBCO)/Au system. We show that, upon application of ...
Compressional and shear wave velocities in uncemented sediment containing gas hydrate
(American Geophysical Union, 2005-05)
The competing hypotheses for gas hydrate formation at the particle scale in sediments describe processes of pore-filling, frame-building, or cementation. New measurements of compressional (VP) and shear wave (VS) velocities ...